Paper-like material and process of making same.



U ITED STATES PATENT OFFICE.

' THEODOR ROSENTHAL, OF NUREMBERG, GERMANY.

PAPER-LIKE MATER IAL AND PROCESS OF MAKING SAME.

SPECIFICATION forming part of Letters Patent No. 683,070, datedSeptember 24, 1901.

Application filed June 7, 1901. Serial No. 63,643. (N specimens.)

To all whom it may concern.-

Be it known that I, THEODOR ROSENTHAL, a subject of the Emperor ofGermany, residing at Nuremberg, Bavaria, Germany, have made certain newand useful Improvements in Paper-Like Materials and Processes of MakingSame, of which the following is a specification.

The present invention has for its object to produce a material in thicklayers with the means at disposal in paper manufacture, which materialexcels the ordinary paper products, more particularly pasteboard, in itsextraordinary softness and great power of absorption. This object isattained by the material being mixed with animal or human hair whilebeing disintegrated in the ragengine. The quantity of this hair is suchthat in spite of this addition the material can be further treated byhand or machinery in the manner usual in the manufacture of paper.

The manufacture of this improved material is carried out in thefollowing manner: The paper-pulp produced by the ordinary method fromrags is mixed with about ten to fifteen per cent. of its total bulk ofhair in the ragengine and the hair is ground into the paper mass. Theunsized material on completion of the grinding is either filled intotroughs or tubs for the manufacture of hand-paper and divided intocomparatively thick layers or is further treated by the process usuallyadopted for making machine-made paper. The sheets or bands thus obtainedare dried, calendered, and then present a porous material which equalsor exceeds hair felt in its softness and absorptive qualities while thecost of manufacture is very low. This improved material may thereforeserve in many cases for advantageously replacing felt, and especially inView of the deodorizing action inherent in it without furtherpreparation is particularly suitable for hygienic purposes-for instance,for insertion as socks or soles in boots. The process hereinbeforedescribed also enables the material to be provided for such uses in avery simple manner with any suitable admixture and additions.

In cases where it is of importance that the material have a certaintoughness or durability this property may be increased in a simplemanner by inserting during the compression between two layers of thematerial a core or insertion of fabric-for instance, gauze-whichconsiderably increases the cohesion of the substance. Of course bymaking it of suitable thickness several layers may be formed in onesheet, and, if desired, the sheets may be coated on both sides withlayers of fabric.

I declare that what I claim is 1. An improved material resembling paperof great absorptive qualities composed of animal or human hair mixedwith the usual paper materials in the rag-engine, and then treated inthe usual manner in paper manufacture, substantially as hereinbeforedescribed.

2. Aprocessof manufacturinganimproved material resembling paper, whichconsists in adding ten to fifteen per cent. of animal or human hair tothe usual paper-making materials in the rag-engine, and then operatingin the usual manner for paper-making substantially as hereinbefore setforth.

In witness whereof I have hereunto set my hand in presence of twowitnesses.

THEODOR ROSENTl-IAL.

Witnesses:

ANDREAS Srron, OSCAR Boon.

